.dl {
    width: 90%;
    height: 100%;
    text-align: center;
  }
.ys{
    font-weight: bold
}
.ys2{
    display: flex; float: left; width: 48%
}
.ys3{
    display: flex; float: left; width: 49%
}
.ys4{
    margin-left: 20px
}
.ys5{
    width: 300px
}